KR102144920B1 - Battery Module Comprising Module Case Coupled with Hinge Structure - Google Patents

Abstract

The present invention is a battery cell assembly in which a plurality of battery cells are arranged in an electrically connected state; And a first exterior member and a second exterior member, each of which surrounds at least one exterior surface of the battery cell assembly, and are coupled to each other in a hinge structure of a reversible coupling method. .

Description

Battery Module Comprising Module Case Coupled with Hinge Structure {Battery Module Comprising Module Case Coupled with Hinge Structure}

The present invention relates to a battery module including an exterior member coupled in a hinge structure.

In recent years, as technology development and demand for mobile devices increase, the demand for rechargeable and dischargeable secondary batteries as an energy source is rapidly increasing, and accordingly, many studies on secondary batteries that can meet various demands have been conducted. In addition, the secondary battery is an electric vehicle (EV), hybrid electric vehicle (HEV), and plug-in hybrid electric vehicle that is proposed as a solution to air pollution such as gasoline vehicles and diesel vehicles that use fossil fuels. It is also attracting attention as a power source such as (Plug-In HEV).

Accordingly, electric vehicles (EV) that can be operated with only batteries, hybrid electric vehicles (HEVs) that use a battery and an existing engine have been developed, and some are commercially available. Secondary batteries as power sources such as EVs and HEVs are mainly nickel hydride metal (Ni-MH) secondary batteries, but in recent years, studies using lithium secondary batteries with high energy density, high discharge voltage and output stability are actively conducted. And are in the stage of commercialization.

When such a secondary battery is used in a device or device that requires a large capacity, such as a power source of a vehicle or a power storage device, the secondary battery is used in the form of a battery cell assembly or a battery module in which a plurality of battery cells are arranged. .

In general, such a battery cell assembly or battery module can prevent degradation of performance or safety due to physical damage to the battery cell assembly or battery cells constituting the battery module in various operating environments of the device or device, It is used as a structure to improve structural stability by a plurality of exterior members surrounding the outer surface.

1 and 2 are exploded views schematically showing various structures of a conventional battery module.

First, referring to FIG. 1, the battery module 100 includes a battery cell assembly 110 and an exterior member surrounding an outer surface of the battery cell assembly 110.

The battery cell assembly 110 is a structure in which a plurality of battery cells 111 are electrically connected to each other at a portion of the electrode terminal 112 and is arranged in a direction of one surface, and has a hexahedral shape as a whole.

The exterior members 121 and 122 include a first exterior member 121 and a second exterior member 122.

The first exterior member 121 and the second exterior member 122 have a first surface and a second surface facing each other based on the protruding direction of the electrode terminal 112 of the battery cell 111 constituting the battery cell assembly 110. It is combined in a structure that covers the rest of the outer surfaces except for the surface.

The first exterior member 121 has a "c" shape in a vertical cross section so as to continuously surround the adjacent front, upper and rear surfaces of the battery cell assembly 110 except for the first and second surfaces. It consists of a plate-shaped structure that is bent in a direction.

The second exterior member 122 is one plate-shaped covering the remaining surfaces of the battery cell assembly 110 except for the front and rear surfaces of the battery cell assembly 110 except for the front, upper and rear surfaces of the battery cell assembly 110. It consists of a structure.

The first exterior member 121 and the second exterior member 122 surround the battery cell assembly 110 by being coupled by welding in a state in which the corresponding corner portions 121a, 121b, 122a, 122b are in contact with each other. It consists of a structure.

Referring to FIG. 2, the first exterior member 221 and the second exterior member 222 are adjacent to each other among the remaining exterior surfaces of the battery cell assembly 210 except for the first and second surfaces facing each other. It consists of a plate-shaped structure bent in a "b" shape in a vertical section so as to continuously surround the side and upper surface, and the other side and lower surface.

Structures other than the above structure are the same as those of the battery module of FIG. 1.

However, in such a battery module, in a state in which a separate cover or protection member is not interposed between the battery cell assembly and the exterior member, the exterior member directly surrounds the exterior surface of the battery cell assembly so as to maximize the capacity in a limited space. Since it is joined by welding in a state, there is a problem that the battery cell assembly may be damaged by sparks or flying products generated during the welding process.

In addition, damage to the battery cell assembly due to such a flame may cause a risk such as a fire and an explosion of the battery cell assembly, thereby acting as a factor that deteriorates the work environment of the operator during the work.

Moreover, in the welding process of such an exterior member, it is also not easy to set a welding area to minimize the problem, and in this case, the time required for welding for bonding of the exterior member increases, so the battery module There is also a problem that the time and cost required for manufacturing of the product are inevitably increased.

Therefore, there is a high need for a technology that can fundamentally solve this problem.

An object of the present invention is to solve the problems of the prior art as described above and technical problems that have been requested from the past.

After in-depth research and various experiments, the inventors of the present application are configured so that the first and second exterior members surrounding the outer surface of the battery cell assembly are mutually coupled in a hinge structure of a reversible coupling method, as described later. By doing so, it prevents damage to the battery cell assembly due to scattering or sparks that may occur during the welding process for bonding the exterior members, and prevents fire and explosion of the battery cell assembly. It is confirmed that the battery module can be manufactured more easily, and the time and cost required for manufacturing the battery module can be saved, since a separate design or process for setting the welding part is not required. And came to complete the present invention.

The battery module according to the present invention for achieving this object,

A battery cell assembly in which a plurality of battery cells are arranged in an electrically connected state; And

A first exterior member and a second exterior member each enclosing at least one of the exterior surfaces of the battery cell assembly and coupled to each other in a hinge structure of a reversible coupling method;

It may be composed of a structure including.

Accordingly, the battery module according to the present invention may eliminate the welding process for coupling the exterior members by mutually coupling the first exterior member and the second exterior member surrounding the outer surface of the battery cell assembly with a hinge structure of a reversible coupling method. Therefore, the safety of the working environment is further improved by preventing damage to the battery cell assembly due to scattering or sparks that may occur during the welding process for bonding the exterior members, and by preventing fire and explosion of the battery cell assembly. Since a separate design or process for setting a welding part is not required, a battery module can be manufactured more easily, and time and cost required for manufacturing the battery module can be saved.

In one embodiment of the present invention, the battery cell may be a pouch type battery.

The pouch-type battery may have a structure in which a positive electrode, a negative electrode, and an electrode assembly having a separator structure interposed between the positive electrode and the negative electrode are embedded together with an electrolyte in a battery case of a laminate sheet.

In one embodiment of the present invention, the battery cell assembly may have a hexahedral structure in which a plurality of battery cells are arranged to face each other. An adhesive member may be interposed between the battery cells to contact and fix the battery cells. The adhesive member may be, for example, a double-sided tape, but is not limited thereto as long as it is a material capable of facilitating contact and fixing of battery cells.

The electrode terminals of the battery cells may be positioned on a first outer surface of the battery cell assembly, or may be positioned on a first outer surface and a second outer surface opposite to the first outer surface.

Here, an electrical connection member electrically connected to the electrode terminal of the battery cell may be located on the first outer surface and the second outer surface facing each other of the battery cell assembly, and more specifically, the electrical connection member is a battery It may be an electrical connection member such as a bus bar for electrically connecting the electrode terminals of the cell, or an external input/output terminal for electrically connecting the battery module to an external device.

Accordingly, the battery cell assembly may form a battery module by combining the first exterior member and the second exterior member with the first exterior member and the second exterior member while being preferentially connected to the electrical connection member at the electrode terminal portion, or the first exterior member and the second exterior member. In a state in which the members are preferentially coupled, since the battery cell assembly can be connected to the electrical connection member at the electrode terminal portion through the open first outer surface and the second outer surface portion, interference between members constituting the battery module Without, it is possible to more easily manufacture the battery module.

The hexahedral structure of the battery cell assembly may have a structure including a third outer surface, a fourth outer surface, a fifth outer surface, and a sixth outer surface contacting sides with the first outer surface and the second outer surface, respectively.

The shape of the battery cell assembly may be made of a hexahedral structure in order to maximize the battery capacity embedded in the first and second exterior members, but polyhedrons of various shapes according to the shapes of the first and second exterior members. It can be made of.

In one embodiment of the present invention, the first exterior member may be bent so as to surround the third and fourth exterior surfaces of the battery cell assembly, and the second exterior member may include a fifth exterior and a fourth exterior surface of the battery cell assembly. 6 It may be bent to cover the outer surface. Since the battery cell assembly may have a hexahedral structure, the structure that is bent so as to surround the third outer surface of the first exterior member and the fourth outer surface adjacent to the third outer surface may have a'b' shape. have. Likewise, a structure that is bent so as to surround the fifth outer surface of the second exterior member and the sixth outer surface adjacent to the fifth outer surface may have a'b' shape.

In a specific embodiment, the first exterior member and the second exterior member may be vertically bent to surround the outer surface of the battery cell assembly.

In one embodiment of the present invention, the first exterior member and the second exterior member are at least one first hinge fastener formed at the edge end in the longitudinal direction of the edge of the first exterior member, the second exterior member A hinge structure of a reversible coupling method is formed by a combination of at least one second hinge fastener formed at the edge end in the longitudinal direction of the edge, and a fastening shaft inserted into the first hinge fastener and the second hinge fastener, and There may be.

In a specific embodiment, a plurality of first hinge fasteners may be formed at an edge end of the first exterior member, a plurality of second hinge fasteners may be formed at an edge end of the second exterior member, , First hinge fasteners and second hinge fasteners may be formed at corner ends of the first and second exterior members so that the first hinge fasteners and the second hinge fasteners are alternately arranged.

Each of the first exterior member and the second exterior member may be made of a plate material, and the first hinge fastener and the second hinge fastener may have a structure in which edge ends of the plate material are curled.

As one specific example of the fastening shaft, the fastening shaft,

A shaft body inserted into the first hinge fastener and the second hinge fastener;

A shaft head having an outer diameter relatively larger than the inner diameters of the first hinge fastener and the second hinge fastener and formed at one end of the shaft body; And

A fastening recessed groove formed at the other end of the shaft body and having an outer diameter relatively smaller than the inner diameters of the first hinge fastener and the second hinge fastener;

It may be composed of a structure including.

In addition, the fastening shaft may further include a fixing member that is mounted in the indentation groove for fastening while the shaft body of the fastening shaft is inserted into the first hinge fastener and the second hinge fastener.

Specifically, the fixing member may have an outer diameter that is relatively larger than the inner diameters of the first hinge fastener and the second hinge fastener, and may include an opening into which an indentation groove for fastening is inserted.

The shaft body may have a shape that enables a rotational structure about the shaft body between the first and second exterior members. For example, the shaft body has a circular or polygonal structure in a vertical cross section. It can consist.

In one embodiment of the present invention, a plurality of first hinge fasteners may be formed at one edge end and the other edge end of the first exterior member, respectively, and one edge end and the other edge of the second exterior member A plurality of second hinge fasteners may be formed at each end.

Specifically, the first exterior member and the second exterior member are provided with first hinge fasteners formed at one edge end of the first exterior member in a state in which the battery cell assembly is not embedded, and the second exterior member corresponding thereto. The first hinge structure may be formed by a combination of the second hinge fasteners formed at one edge end.

In the state in which the first hinge structure is formed, the battery cell assembly may be mounted on the inside of the first or second exterior member, and the first hinge is formed at the end of the other side of the first exterior member. The second hinge structure may be formed by a combination of the spheres and the second hinge fasteners formed at the other edge end of the second exterior member corresponding thereto.

According to the above structure, the battery cell assembly reduces the resistance in the process of mounting the battery cell assembly compared to the process of inserting the battery cell assembly in a state in which the first and second exterior members are completely combined. It can be significantly lowered and the assembly time can be shortened.

In one embodiment of the present invention, a bus bar including a plurality of bus bars electrically connecting the battery cells and sensing terminals for measuring voltage and temperature of the battery cells at a portion where the electrode terminals of the battery cell assembly are located Assembly may be mounted.

The present invention also provides a device in which at least one battery module is mounted as a power source, wherein the device is selected from the group consisting of a power tool, an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a power storage device. It can be one.

Since the devices and devices are well known in the art, detailed descriptions thereof will be omitted.

The present invention is also a method of manufacturing the battery module,

(a) forming a battery cell assembly by arranging a plurality of battery cells in a hexahedral structure in a state in which they are electrically connected;

(b) Bending the plate material to correspond to the third to sixth outer surfaces excluding the first and second outer surfaces from which the electrode terminals of the battery cell assembly protrude to constitute the first and second exterior members. process;

(c) forming a plurality of first hinge fasteners at the corners of the first exterior member so that the following first hinge fasteners and the second fasteners are alternately arranged, and second hinge fasteners at the corners of the second exterior member And, in a state in which one edge of the first exterior member and one edge of the second exterior member are in contact, the first exterior member and the second exterior member are inserted into hinge fasteners of the first exterior member and the second exterior member. A process of coupling the 1 exterior member and the second exterior member to each other at one edge in a first hinge structure of a reversible coupling method;

(d) mounting the battery cell assembly to a first exterior member or a second exterior member while the first hinge structure is formed; And

(e) when the battery cell assembly is mounted on the first or second exterior member, the first exterior member or the second exterior member is rotated around a first hinge structure, Among the outer surfaces, a third outer surface and a fourth outer surface are wrapped by a first exterior member, the fifth and sixth exterior surfaces are wrapped by a second exterior member, and a hinge of the other side edge of the first exterior member and the second exterior member Inserting a fastening shaft into fasteners to mutually couple the first exterior member and the second exterior member at the other corners in a second hinge structure of a reversible coupling method;

It provides a battery module manufacturing method comprising a.

As described above, in the battery module according to the present invention, the first exterior member and the second exterior member surrounding the outer surface of the battery cell assembly are coupled to each other in a hinge structure of a reversible coupling method, so that the welding process for coupling the exterior members By preventing damage to the battery cell assembly due to scattering or sparks that may occur in the battery, and preventing fire and explosion of the battery cell assembly due to this, it is possible to further improve the safety of the working environment and to set the welding area. Since a separate design or process is not required, it is possible to manufacture the battery module more easily, and at the same time, there is an effect of saving time and cost required for manufacturing the battery module.

1 and 2 are exploded views schematically showing various structures of a conventional battery module;
3 is an exploded view schematically showing the structure of a battery module according to an embodiment of the present invention;
4 is a schematic diagram showing a state before the exterior members of FIG. 3 embed the battery cell assembly;
5 is a schematic diagram schematically showing the structure of the fastening shaft of FIG. 4;
6 is a flowchart of a method of manufacturing the battery module of FIG. 3.

Hereinafter, the present invention will be described in more detail with reference to the drawings according to an embodiment of the present invention, but the scope of the present invention is not limited thereto.

FIG. 3 is an exploded view schematically showing the structure of a battery module according to an embodiment of the present invention, and FIG. 4 is a schematic diagram schematically showing a state before the exterior members of FIG. 3 embed the battery cell assembly. Has been.

3 and 4, the battery module 300 includes a battery cell assembly 330, a first exterior member 310, and a second exterior member 320.

The battery cell assembly 330 is a structure in which a plurality of battery cells 30 are arranged in a state in which the side surfaces of the battery cells 30 face each other. An adhesive member (not shown) is interposed between the plurality of battery cells 30, and the battery cells 30 are in contact and fixed to each other by the adhesive member.

The first exterior member 310 and the second exterior member 320 each have a first exterior surface 331 facing each other based on the protruding direction of the electrode terminal 31 of the battery cell 30 constituting the battery cell assembly 330. ) And the other outer surfaces 333, 334, 335, 336 except for the second outer surface 332, a plate-shaped structure in which the plate is bent in a "b" shape in a vertical section so as to continuously surround two adjacent outer surfaces Consists of.

That is, the first exterior member 310 is bent to surround the third outer surface 333 and the fourth outer surface 334 of the battery cell assembly 330, and the second exterior member 320 is the battery cell assembly 330 ) Is bent to surround the fifth outer surface 335 and the sixth outer surface 336. The first exterior member 310 and the second exterior member 320 are vertically bent to correspond to the hexahedral structure of the battery cell assembly 330.

A plurality of first hinge fasteners 311 are formed at the first edge end 312 and the second edge end 313 of the first exterior member 310, respectively, and a third of the second exterior member 320 A plurality of second hinge fasteners 321 are formed at the edge end 322 and the fourth edge end 323, respectively.

The first hinge fasteners 311 and the second hinge fasteners 321 are formed so that the first hinge fasteners 311 and the second hinge fasteners 321 are alternately arranged.

In addition, the first exterior member 310 and the second exterior member 320 are each made of a plate, and the first hinge fastener 311 and the second hinge fastener 321 are edge ends 312 and 313 of the plate material. , 322, 323) is formed in a curled structure.

In the state before the battery cell assembly 330 is embedded in the first exterior member 310 and the second exterior member 320, the first edge end 312 and the third edge end 322 are first coupled to the first exterior member. To form a hinged structure.

When the first hinge structure is formed, the battery cell assembly 330 is mounted inside the second exterior member 320, and the battery cell assembly 330 is mounted on the second exterior member 320. The member 310 is rotated so that the second edge end 313 and the fourth edge end 323 are coupled to form a second hinge structure.

According to this structure, the battery cell assembly can significantly lower the resistance in the process of mounting the battery cell assembly as compared to the process of inserting the battery cell assembly in a state in which the first and second exterior members are completely combined. And can shorten assembly time.

5 schematically shows the structure of the fastening shaft of FIG. 3.

Referring to FIG. 5, the fastening shaft 400 includes a shaft body 410, a shaft head 420, a recessed groove 430 for fastening, and a fixing member 440.

The shaft body 410 is configured to be inserted into the first hinge fastener 311 and the second hinge fastener 321.

The shaft head 420 is in a state in which the shaft body 410 is inserted into the first hinge fastener 311 and the second hinge fastener 321, and the shaft body 410 connects the hinge fasteners 310 and 320. It has an outer diameter larger than the inner diameter of the hinge fasteners 310 and 320 so as to be prevented from passing through and is formed at one end of the shaft body 410.

The recessed groove 430 is hinged to fix the other end of the shaft body 410 in a state in which the shaft body 410 is inserted into the first hinge fastener 311 and the second hinge fastener 321 It consists of a structure having an outer diameter smaller than the inner diameter of the spheres 310 and 320, and the fixing member 440 is mounted in the recessed groove 430 to fix the shaft body 410.

The fixing member 440 has an outer diameter larger than the inner diameters of the hinge fasteners 310 and 320 and includes an opening 441 into which the indentation groove 430 for fastening is inserted.

The shaft body 410 has a polygonal structure in a vertical cross section, and the first exterior member 310 and the second exterior member 320 have a structure capable of mutually rotating around the shaft body 410.

6 is a flowchart illustrating a method of manufacturing the battery module of FIG. 3.

Referring to FIG. 6 together with FIGS. 3 to 5, in step (a), a battery cell assembly 330 is constructed by first arranging a plurality of battery cells 30 in a hexahedral structure in a state in which they are electrically connected (S100). ).

Next, in the process (b), the plate material corresponds to the third outer surface 333 and the fourth outer surface 334 except for the first outer surface 331 and the second outer surface 332 of the battery cell assembly 330 Then, the first exterior member 310 is formed by bending, and the second exterior member 320 is configured by bending corresponding to the fifth exterior surface 335 and the sixth exterior surface 336 (S200).

In the process (c), first hinge fasteners 311 are formed on the edge ends 312 and 313 of the first exterior member 310, and the edge ends 322 and 323 of the second exterior member 320 are formed. ) To form the second hinge fasteners 321. The first hinge fasteners 311 and the second hinge fasteners 321 are formed to be alternately arranged. In a state in which the first edge end 312 of the first exterior member 310 and the third edge end 322 of the second exterior member 320 are in contact with each other, the fastening shaft 400 is connected to the first hinge fasteners 311 And inserting into the second hinge fasteners 321 to form a first hinge structure (S300).

In the process (d), the battery cell assembly 330 is mounted on the second exterior member 320 (S400).

In the process (e), the first exterior member 310 is rotated around the first hinge structure, so that the second corner end 313 of the first exterior member 310 is replaced with the fourth corner of the second exterior member 320 In contact with the end portion 323, the third outer surface 333 and the fourth outer surface 334 of the outer surfaces of the battery cell assembly 330 are wrapped by the first exterior member 310, and the fifth outer surface 335 and the fourth outer surface 334 6 The outer surface 336 is wrapped by the second exterior member 320. Finally, in a state in which the second edge end 313 of the first exterior member 310 and the fourth edge end 323 of the second exterior member 320 are in contact with each other, the fastening shaft 400 is connected to the first hinge fastener ( 311) and the second hinge fasteners 321 to form a second hinge structure (S500).

Those of ordinary skill in the field to which the present invention belongs will be able to make various applications and modifications within the scope of the present invention based on the above contents.

Claims (17)

A battery cell assembly in which a plurality of battery cells are arranged in an electrically connected state; And
A first exterior member and a second exterior member each enclosing at least one of the exterior surfaces of the battery cell assembly and coupled to each other in a hinge structure of a reversible coupling method;
Consists of including,
The battery cell assembly has a hexahedral structure in which a plurality of battery cells are arranged facing each other;
The hexahedral structure includes a third outer surface, a fourth outer surface, a fifth outer surface, and a sixth outer surface each in contact with the first outer surface and the second outer surface, and
The first exterior member,
All of the third and fourth outer surfaces of the battery cell assembly A bent portion bent in the shape of a'b'or'a' to wrap it;
At least one first hinge fastener formed at predetermined intervals at both edge ends in the longitudinal direction of the bent edge;
Have,
The second exterior member,
All the fifth and sixth outer surfaces of the battery cell assembly A bent portion bent in the shape of a'ㄱ'or'b' to wrap it;
At least one second hinge fastener formed at predetermined intervals at both edge ends in the longitudinal direction of the bent edge; and,
The first hinge fastener and the second hinge fastener,
When the edge ends of both sides of the first exterior member and the second exterior member are in contact with each other, they are formed at the edge ends of the first exterior member and the second exterior member so that they are alternately arranged,
A first hinge structure is formed by a combination of first hinge fasteners formed at one edge end of the first exterior member and second hinge fasteners formed at one edge end of the second exterior member corresponding thereto, ;
A second hinge structure is formed by a combination of the first hinge fasteners formed at the other edge end of the first exterior member and the second hinge fasteners formed at the other edge end of the second exterior member corresponding thereto. ,
The first and second hinge structures,
Battery module, characterized in that in a state in which the first hinge fasteners and the second hinge fasteners are alternately arranged, the fastening shaft is inserted so as to simultaneously penetrate the first hinge fastener and the second hinge fastener to form a hinge coupling structure . The battery module according to claim 1, wherein the battery cell is a pouch type battery. The method of claim 1,
The battery module, wherein the electrode terminals of the battery cells are positioned on a first outer surface or on a first outer surface and a second outer surface opposite to the first outer surface. delete The battery module of claim 1, wherein the first and second exterior members are vertically bent so as to surround outer surfaces of opposite sides of the battery cell assembly. delete delete The method of claim 1, wherein the first exterior member and the second exterior member are each made of a plate, and the first hinge fastener and the second hinge fastener have a structure in which edge ends of the plate material are curled. Battery module. The method of claim 1, wherein the fastening shaft,
A shaft body inserted into the first hinge fastener and the second hinge fastener;
A shaft head having an outer diameter relatively larger than the inner diameters of the first hinge fastener and the second hinge fastener and formed at one end of the shaft body; And
A fastening recessed groove formed at the other end of the shaft body and having an outer diameter relatively smaller than the inner diameters of the first hinge fastener and the second hinge fastener;
Battery module comprising a. 10. The battery module of claim 9, further comprising a fixing member mounted in the indentation groove for fastening while the shaft main body of the fastening shaft is inserted into the first hinge fastener and the second hinge fastener. The battery module of claim 10, wherein the fixing member has an outer diameter that is relatively larger than the inner diameters of the first hinge fastener and the second hinge fastener, and includes an opening into which a recess for fastening is inserted. The battery module according to claim 9, wherein the shaft body has a circular or polygonal structure in a vertical section. The method of claim 1, wherein a plurality of first hinge fasteners are formed at one edge end and the other edge end of the first exterior member, and a plurality of first hinge fasteners are formed at one edge end and the other edge end of the second exterior member, respectively. Battery module, characterized in that the second hinge fasteners are formed. delete The method of claim 1, wherein a bus bar assembly including a plurality of bus bars electrically connecting the battery cells and sensing terminals for measuring voltage and temperature of the battery cells is mounted on a portion where the electrode terminals of the battery cell assembly are located. Battery module, characterized in that the. A device in which at least one battery module according to claim 1 is mounted. As a method of manufacturing a battery module according to any one of claims 1, 2, 3, 5, 8 to 13, 15, or 16,
(a) forming a battery cell assembly by arranging a plurality of battery cells in a hexahedral structure in a state in which they are electrically connected;
(b) Bending the plate material to correspond to the third to sixth outer surfaces excluding the first and second outer surfaces from which the electrode terminals of the battery cell assembly protrude to constitute the first and second exterior members. process;
(c) forming a plurality of first hinge fasteners at the corners of the first exterior member so that the following first hinge fasteners and the second fasteners are alternately arranged, and second hinge fasteners at the corners of the second exterior member And, in a state in which one edge of the first exterior member and one edge of the second exterior member are in contact, the alternately arranged first and second hinges of the first exterior member and the second exterior member are fastened Inserting a fastening shaft into a sphere to couple the first exterior member and the second exterior member to each other in a first hinge structure of a reversible coupling method at one edge;
(d) mounting the battery cell assembly to a first exterior member or a second exterior member while the first hinge structure is formed; And
(e) when the battery cell assembly is mounted on the first or second exterior member, the first exterior member or the second exterior member is rotated around a first hinge structure, Among the outer surfaces, a third outer surface and a fourth outer surface are wrapped by a first exterior member, and the fifth and sixth exterior surfaces are wrapped by a second exterior member, and the first exterior member and the second exterior member are surrounded by a second exterior member. 1, inserting a fastening shaft in a state in which the second hinge fasteners are alternately arranged to mutually couple the first exterior member and the second exterior member to a second hinge structure of a reversible coupling method at the other edge;
Battery module manufacturing method comprising a.

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